Filter cartridge



FIG. 1 is a top perspective view of a filter cartridge showing our new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front elevation view thereof, with the rear elevation view being a mirror image of the front view shown in FIG. 3;

FIG. 4 is a side elevation view thereof, with the opposite side elevation view being a mirror image of the side view shown in FIG. 4;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

In the drawings, the broken lines depict portions of the filter cartridge that form no part of the claimed design. 

CLAIM The ornamental design for a filter cartridge, as shown and described. 